Method and apparatus to transfer information between different categories of servers and one or more data storage media

A data storage and retrieval system which includes one or more hard disks individually housed in a portable hard disk drive unit, a first information transfer station capable of communicating with one or more first servers, and a second information transfer station capable of communicating with one or more second servers. A method to transfer information between those first servers, second servers, and hard disks. A data storage and retrieval system comprising computer useable medium having computer readable program code disposed therein, where that computer readable program code comprises a series of computer readable program steps to implement Applicants' method.